40643148 has 108 divisors (see below), whose sum is σ = 119747880. Its totient is φ = 10692864.

The previous prime is 40643137. The next prime is 40643171. The reversal of 40643148 is 84134604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 99168 + ... + 99576.

Almost surely, 2^40643148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40643148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59873940).

40643148 is an abundant number, since it is smaller than the sum of its proper divisors (79104732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40643148 is a wasteful number, since it uses less digits than its factorization.

40643148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40643148 is about 6375.1978792819. The cubic root of 40643148 is about 343.8183983784.

The spelling of 40643148 in words is "forty million, six hundred forty-three thousand, one hundred forty-eight".